Is there a reason mandatory headers are not applied for parent fields?

[ASterdyniak]

Hi,

I have stumbled upon this issue today. In case of an inheritance hierarchy, the fields are filled properly but the mandatory header flag is not checked. is there a reason for that?

I have created a PR with a straightforward fix

#357

Best regards

[github-actions]

Thank you for contributing to Poiji! Feel free to create a PR If you want to contribute directly :)